| Nederlands | nld-000 |
| onderaards | |
| asturianu | ast-000 | soterrañu |
| беларуская | bel-000 | падземны |
| brezhoneg | bre-000 | dindandouar |
| български | bul-000 | подземен |
| català | cat-000 | subterrani |
| čeština | ces-000 | podzemní |
| 普通话 | cmn-000 | 地下 |
| 普通话 | cmn-000 | 地底 |
| 國語 | cmn-001 | 地下 |
| 國語 | cmn-001 | 地底 |
| Deutsch | deu-000 | unterirdisch |
| English | eng-000 | belowground |
| English | eng-000 | speluncar |
| English | eng-000 | subsurface |
| English | eng-000 | subterranean |
| English | eng-000 | subterraneous |
| English | eng-000 | underground |
| Esperanto | epo-000 | subgrunda |
| Esperanto | epo-000 | subtera |
| suomi | fin-000 | maanalainen |
| suomi | fin-000 | underground |
| français | fra-000 | sous terre |
| français | fra-000 | souterrain |
| français | fra-000 | souterraine |
| français | fra-000 | underground |
| galego | glg-000 | de vangarda |
| galego | glg-000 | underground |
| Srpskohrvatski | hbs-001 | podzemno |
| Srpskohrvatski | hbs-001 | potajno |
| Srpskohrvatski | hbs-001 | prikriveno |
| magyar | hun-000 | földalatti |
| italiano | ita-000 | sotterranea |
| 日本語 | jpn-000 | 地下 |
| қазақ | kaz-000 | жерасты |
| македонски | mkd-000 | подземен |
| Nederlands | nld-000 | ondergronds |
| polski | pol-000 | podziemny |
| português | por-000 | subterrânea |
| português | por-000 | subterrâneo |
| русский | rus-000 | подзе́мный |
| русский | rus-000 | подземный |
| slovenčina | slk-000 | podzemný |
| slovenčina | slk-000 | protestný |
| español | spa-000 | subterráneo |
| українська | ukr-000 | підземний |
| українська | ukr-000 | підпільний |